Provided are a computer program product for managing tracks in a storage in a cache. An active track data structure indicates tracks in the cache that have an active status. An active bit in a cache control block for a track is set to indicate active for the track indicated as active in the active track data structure. In response to processing the cache control block, a determination is made, from the cache control block for the track, whether the track is active or inactive to determine processing for the cache control block.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The computer program product of claim 1, wherein the processing the cache control block comprises obtaining or releasing a lock on the cache control block.
5. The computer program product of claim 1, wherein the active track data structure comprises a bitmap including bits for cache control blocks, wherein a bit for a cache control block indicates whether a track identified by the cache control block is active or inactive.
9. The computer program product of claim 8, wherein the processing the active track data structure and the performing the recovery operation are part of a recovery process during initialization of a system including the cache after a system failure.
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July 29, 2021
January 10, 2023
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